A large metallic plate is facing a charged sheet having charge density σ placed parallel to plate at a distance l from the plate. Potential at point P at a distance x from the sheet is
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a
σ2ε0(l+x)
b
σ2ε0(l−x)
c
σε0(l−x)
d
σεo(l+x)
answer is C.
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Detailed Solution
surface charge density of induced charge on the metal plate is σ2ε0 . Therefore resultant E = σ2ε0+σ2ε0=σε0 ∴V=σε0(l−x)